Display panel and display apparatus

ABSTRACT

A display panel and a display apparatus are provided. The display panel has a display region including a fingerprint recognition region. The fingerprint recognition region includes a plurality of light-transmitting apertures. The display panel includes a plurality of sub-pixels, a plurality of touch electrodes, and a plurality of touch leads that are located in the display region. The plurality of touch leads is electrically connected to the plurality of touch electrodes, respectively. The display region includes sub-pixel spacing regions located between two adjacent sub-pixels, and at most one of the touch lead and the light-transmitting aperture is arranged in the sub-pixel spacing region.

CROSS-REFERENCE TO RELATED APPLICATION

The present application claims the benefit of Chinese Patent ApplicationNo. 202210336719.7, filed on Mar. 31, 2022, the content of which isincorporated herein by reference in its entirety.

TECHNICAL FIELD

The present disclosure relates to the field of display technologies,and, particularly, relates to a display panel and a display apparatus.

BACKGROUND

In recent years, display apparatuses with biometric recognitionfunctions have gradually entered people's life and work. Fingerprintrecognition technology has been widely applied in applications such asunlocking and secure payment due to a unique identity of fingerprints.

However, the display panel has a poor fingerprint recognition accuracy,and misjudgment occurs during recognition. Therefore, it is an urgenttechnical problem to be solved that how to improve the fingerprintrecognition performance.

SUMMARY

In a first aspect of the present disclosure, a display panel isprovided. The display panel has a display region and includes aplurality of sub-pixels, a plurality of touch electrodes, and aplurality of touch leads that are located in the display region. Theplurality of touch leads is respectively electrically connected to theplurality of touch electrodes. The display region includes a fingerprintrecognition region, and the fingerprint recognition region includes aplurality of light-transmitting apertures. The display region includes aplurality of sub-pixel spacing regions, one of the plurality ofsub-pixel spacing regions is located between two adjacent sub-pixels ofthe plurality of sub-pixels, and at most one of one of the plurality oftouch leads and one of the plurality of light-transmitting apertures isprovided in one of the plurality of sub-pixel spacing regions.

In a second aspect of the present disclosure, a display apparatus isprovided. The display apparatus includes a display panel. The displaypanel has a display region and includes a plurality of sub-pixels, aplurality of touch electrodes, and a plurality of touch leads that arelocated in the display region. The plurality of touch leads isrespectively electrically connected to the plurality of touchelectrodes. The display region includes a fingerprint recognitionregion, and the fingerprint recognition region includes a plurality oflight-transmitting apertures. The display region includes a plurality ofsub-pixel spacing regions, one of the plurality of sub-pixel spacingregions is located between two adjacent sub-pixels of the plurality ofsub-pixels, and at most one of one of the plurality of touch leads andone of the plurality of light-transmitting apertures is provided in oneof the plurality of sub-pixel spacing regions.

BRIEF DESCRIPTION OF DRAWINGS

In order to better illustrate technical solutions of embodiments of thepresent disclosure, the accompanying drawings used in embodiments arebriefly described below. The drawings described below are merely a partof the embodiments of the present disclosure. Based on these drawings,those skilled in the art can obtain other drawings.

FIG. 1 is a top view of a display panel according to some embodiments ofthe present disclosure;

FIG. 2 is a partial cross-sectional view of a display panel according tosome embodiments of the present disclosure;

FIG. 3 is a partial schematic diagram of a display panel according tosome embodiments of the present disclosure;

FIG. 4 is a schematic diagram of touch electrodes according to someembodiments of the present disclosure;

FIG. 5 is a schematic diagram of touch leads according to someembodiments of the present disclosure;

FIG. 6 is a schematic diagram showing layer positions of the touchelectrodes and the touch leads according to some embodiments of thepresent disclosure;

FIG. 7 is a schematic diagram showing arrangement positions oflight-transmitting apertures according to some embodiments of thepresent disclosure;

FIG. 8 is a schematic diagram showing arrangement positions oflight-transmitting apertures according to another embodiment of thepresent disclosure;

FIG. 9 is a schematic diagram showing arrangement positions oflight-transmitting apertures according to another embodiment of thepresent disclosure;

FIG. 10 is a schematic diagram showing arrangement positions oflight-transmitting apertures according to another embodiment of thepresent disclosure;

FIG. 11 is a schematic diagram showing arrangement positions of touchleads according to some embodiments of the present disclosure;

FIG. 12 is a schematic diagram showing arrangement positions of touchleads according to another embodiment of the present disclosure;

FIG. 13 is a schematic diagram showing arrangement positions of touchleads according to another embodiment of the present disclosure;

FIG. 14 is a schematic diagram of touch leads according to anotherembodiment of the present disclosure;

FIG. 15 is a schematic diagram showing arrangement positions of touchleads according to another embodiment of the present disclosure;

FIG. 16 is a schematic diagram showing arrangement positions of touchleads according to another embodiment of the present disclosure;

FIG. 17 is a schematic diagram showing arrangement positions of touchleads according to another embodiment of the present disclosure;

FIG. 18 is a schematic diagram showing arrangement positions oflight-transmitting apertures according to another embodiment of thepresent disclosure;

FIG. 19 is a schematic diagram showing arrangement positions oflight-transmitting apertures according to another embodiment of thepresent disclosure;

FIG. 20 is a schematic diagram of touch electrodes according to anotherembodiment of the present disclosure; and

FIG. 21 is a schematic diagram of a display apparatus according to someembodiments of the present disclosure.

DESCRIPTION OF EMBODIMENTS

In order to better understand the technical solutions of the presentdisclosure, the embodiments of the present disclosure are described indetail below with reference to the accompanying drawings.

It should be clear that the described embodiments are only someembodiments of the present disclosure, but not all of the embodiments.Based on the embodiments in the present disclosure, all otherembodiments obtained by those of ordinary skill in the art withoutcreative efforts fall within the protection scope of the presentdisclosure.

The terms used in the embodiments of the present disclosure are only forthe purpose of describing specific embodiments, and are not intended tolimit the present disclosure. As used in the embodiments of thisapplication and the appended claims, the singular forms “a/an” “the” and“said” are intended to include the plural forms as well, unless thecontext clearly dictates otherwise.

It should be understood that the term “and/or” used in this document isonly an association relationship to describe the associated objects,indicating that there can be three relationships, for example, A and/orB, which can indicate that A alone, A and B, and B alone. The character“/” in this document generally indicates that the related objects are an“or” relationship.

Conventionally, multiple light-transmitting apertures for fingerprintimaging are provided in the display panel in order to realize afingerprint recognition function. However, due to the small size of suchlight-transmitting apertures, they are easily shieled by some metallayers in the display panel, resulting in less detection light enteringthrough the light-transmitting apertures and poor fingerprintrecognition accuracy.

A display panel is provided in the present disclosure. FIG. 1 is a topview of a display panel according to some embodiments of the presentdisclosure. As shown in FIG. 1 , the display panel includes a displayregion 1. The display region 1 includes a fingerprint recognition region2. The fingerprint recognition region 2 includes a light-transmittingapertures for fingerprint imaging. A partial region or a whole region ofthe display region 1 can be reused into the fingerprint recognitionregion 2.

FIG. 2 is a partial cross-sectional view of a display panel according tosome embodiments of the present disclosure, and FIG. 3 is a partialschematic diagram of a display panel according to some embodiments ofthe present disclosure. As shown in FIG. 2 and FIG. 3 , the displaypanel further includes multiple sub-pixels 4 located in the displayregion 1, multiple touch electrodes 5 located in the display region 1,and multiple touch leads 6 located in the display region 1. The touchelectrode 5 and the touch lead 6 can be located at a side of thesub-pixel 4 toward a light-emitting direction of the display panel. Thetouch lead 6 is electrically connected to the touch electrode 5 and isconfigured to transmit a touch detection signal sensed by the touchelectrode 5 to a driving circuit, and the driving circuit is configuredto determine a touch position of the finger according to the receivedtouch detection signal. In some embodiments, the touch electrode 5 canbe a self-capacitance touch electrode. Multiple touch electrodes 5 areindependently arranged in a matrix. Each touch electrode 5 can beelectrically connected to one touch lead 6. When a finger touches adisplay screen, the capacitance of the finger is superimposed on thetouch electrode 5, so that the capacitance sensed by the touch electrode5 changes, and the touch position of the finger is determined accordingto the touch detection signals transmitted by the touch electrodes 5 atdifferent positions.

The display region 1 includes a sub-pixel spacing region 7. Thesub-pixel spacing region 7 is located between two adjacent sub-pixels 4,and is provided with at most one of the touch lead 6 and thelight-transmitting aperture 3.

In some embodiments of the present disclosure, referring to FIG. 2 , abottom metal layer 8 for shielding ambient light is provided at a sideof the sub-pixel 4 away from the light-emitting direction of the displaypanel. The light-transmitting aperture 3 can be a through holepenetrating the bottom metal layer 8. When performing fingerprintrecognition, the light emitted from the sub-pixel 4 can be used as thelight for recognition and is transmitted to the finger and reflect bythe finger, and the detection light reflected back passes through thelight-transmitting aperture 3 and is incident to a photosensitive sensor9 at the bottom of the display panel, and then the valleys and ridges ofthe fingerprint are recognized according to the intensity of thedetection light collected by the photosensitive sensor 9 at differentpositions.

For a display panel with both touch and fingerprint recognitionfunctions, when designing the touch electrodes 5 and the touch leads 6in the display panel, in order to shield the sub-pixels 4 less,referring to FIG. 3 again, the touch electrode 5 can be a blockelectrode made of a light-transmitting conductive material such asindium tin oxide (Indium Tin Oxides, ITO). FIG. 4 is a schematic diagramof touch electrodes according to some embodiments of the presentdisclosure. In some embodiments, as shown in FIG. 4 , the touchelectrode 5 can also be a grid electrode made of a metal material. Ahollow region of the touch electrode 5 exposes the sub-pixel 4. In orderto reduce a voltage drop when the touch detection signal is transmittedon the touch lead and improve the detection accuracy at the touchposition, the touch lead 6 is generally made of a metal material withlow resistivity, and also has sufficient line width to reduce itsresistance.

When the touch electrode 5 has a metal grid structure, thelight-transmitting aperture 3 can be kept way directly by settingbreakpoints on metal grids. Due to the structure feature of the metalgrids, even if there are breakpoints at some positions, it will not becompletely separated from the electrode body, so that the metal bars onthe metal grid are connected to each other, thereby still achievingnormal functions. However, for the touch lead 6, if the touch lead 6 isprovided with a hollow region or a breakpoint, disconnection between thetouch electrode 5 and the driving circuit may occur, and thus the touchdetection signal cannot be transmitted normally, and it is difficult tomake the touch lead 6 to bypass the light-transmitting aperture 3. Whenthe self-capacitive touch is used, the touch leads 6 can pass throughthe display region to be electrically connected to multiple touchelectrodes 5 in a one-to-one correspondence, so that there are a largenumber of touch leads 6 in the display region, increasing a risk thatthe light-transmitting apertures 3 are blocked by the touch leads 6.

In the embodiments of the present disclosure, the extension manner ofthe touch lead 6 cooperates with the arrangement of thelight-transmitting apertures 3, so that only at most one of the touchlead 6 and the light-transmitting aperture 3 is provided in thesub-pixel spacing region 7 located between any two adjacent sub-pixels4. On the one hand, the touch lead 6 and the light-transmitting aperture3 are located in different sub-pixel spacing regions 7, since thedistance between the touch lead 6 and the light-transmitting aperture 3is relatively far, even if deviations occur in the arrangement positionof the touch lead 6 and/or the arrangement position of thelight-transmitting aperture 3 due to factors such as process errors, thetouch lead 6 cannot cover the light-transmitting aperture 3 to shieldthe light-transmitting aperture 3, thus improving the amount ofdetection light able to pass through the light-transmitting aperture 3,and improving the fingerprint recognition accuracy.

On the other hand, if the touch lead 6 and the light-transmittingaperture 3 are located in a same sub-pixel spacing region 7, in order toachieve that the touch lead 6 does not shield the light-transmittingaperture 3, either the touch lead 6 is arranged as far away from thelight-transmitting aperture 3 as possible, or a line width of the touchlead 6 can be reduced. When the distance between the touch lead and thelight-transmitting aperture is increased, the touch lead 6 and thelight-transmitting aperture 3 tend to be closer to the sub-pixel 4,which makes it difficult to maintain a large distance between thesub-pixel 4 and each of the touch lead 6 and the light-transmittingaperture 3, and it is easy to occur that the touch lead 6 shields thesub-pixel 4, or the sub-pixel 4 shields the light-transmitting aperture3. When the line width of the touch lead 6 decreases, the resistance ofthe touch lead 6 increases, resulting in a greater degree of attenuationof the touch detection signal. In the embodiments of the presentdisclosure, since the touch lead 6 and the light-transmitting aperture 3are located in different sub-pixel spacing regions 7, a sufficientdistance can be achieved between the sub-pixel 4 and each of the touchlead 6 and the light-transmitting aperture 3. Even if the positions oftouch lead 6 and light-transmitting aperture 3 are deviated, the touchlead 6 will not shield the sub-pixel 4, or the sub-pixel 4 will notshield the light-transmitting aperture 3, and there is no need to reducethe line width of the touch lead 6.

In other words, with the above configuration, while ensuring asufficient distance between the sub-pixel 4 and each of the touch lead 6and the light-transmitting aperture 3, a distance between adjacentsub-pixels 4 can be reduced, so that the pixel density can be increased,or the line width of the touch lead 6 is increased to reduce theresistance of the touch lead 6 to optimize the touch performance.

Inside the display panel, the sub-pixel 4, the touch lead 6, and thelight-transmitting aperture 3 are located in different layers,respectively. The distance between any two of the touch lead 6, thelight-transmitting aperture 3, and the sub-pixel 4 in the presentdisclosure refers to a distance between the orthographic projections ofthe any two on a plane of the display panel. Exemplarily, the distancebetween the touch lead 6 and the light-transmitting aperture 3 asdescribed above refers to a distance between an orthographic projectionof the touch lead 6 on the plane of the display panel and anorthographic projection of the light-transmitting aperture 3 on theplane of the display panel.

In some embodiments of the present disclosure, in a case where the touchlead 6 and the light-transmitting aperture 3 are located in differentsub-pixel spacing regions 7, the extending manner of the touch lead 6can be determined flexibly according to the arrangement manner of thesub-pixels 4. For example, referring to FIG. 3 , when the sub-pixels 4are not aligned in the second direction Y and/or the third direction Z,the touch lead 6 can extend in a broken line. It can be understood thatthe touch lead 6 extending in the broken line herein refers to anoverall extending direction of the touch lead 6, that is, from a topview of the display panel, a single touch lead 6 as a whole extends in avertical broken line. FIG. 5 is a schematic diagram of touch leads 6according to some embodiments of the present disclosure. In someembodiments, as shown in FIG. 5 , when the sub-pixels 4 are aligned witheach other in the second direction Y and/or the third direction Z, thetouch lead 6 can extend in a straight line.

In some embodiments of the present disclosure, the touch electrodes 5and the touch leads 6 can be arranged in different layers. For example,referring to FIG. 2 and FIG. 3 , the touch lead 6 can be located at aside of the touch electrodes 5 away from the light-emitting direction ofthe display panel, and in this case, the touch electrodes 5 in thedisplay panel can be electrode blocks with a same shape and area. FIG. 6is a schematic diagram showing layer positions of the touch electrodes 5and the touch leads 6 according to some embodiments of the presentdisclosure. In some embodiments, as shown in FIG. 6 , the touchelectrodes 5 and the touch leads 6 can be arranged in a same layer, andin this case, the touch lead 6 are extend from a side of the touchelectrode 5. When the touch electrodes 5 and the touch leads 6 areprovided in a same layer, in order to bypass the touch leads 6, thetouch electrodes 5 arranged along the extending direction of the touchlead 6 can have different sizes.

FIG. 7 is a schematic diagram showing arrangement positions oflight-transmitting apertures 3 according to some embodiments of thepresent disclosure. In some embodiments, as shown in FIG. 7 , thesub-pixels 4 include first-type sub-pixel 10 located in the fingerprintrecognition region 2. Multiple light-transmitting apertures 3 areprovided in at least one sub-pixel spacing region 7 adjacent to thefirst-type sub-pixel 10.

With such configuration, the distribution density of thelight-transmitting apertures 3 in the fingerprint recognition region 2is relatively large, and at least one light-transmitting aperture 3 isarranged next to each first-type sub-pixel 10 in the fingerprintrecognition region 2, so that after the light emitted by the first-typesub-pixel 10 is reflected back by the finger, it can be incident to thelight sensor 9 through the light-transmitting aperture 3 beside it,thereby increasing the amount of detection light collected by theoptical sensor.

FIG. 8 is a schematic diagram showing arrangement positions oflight-transmitting apertures 3 according to another embodiment of thepresent disclosure. In some embodiments, as shown in FIG. 8 , thesub-pixel 4 include a first-type sub-pixel 10 located in the fingerprintrecognition region 2, And the sub-pixel spacing regions 7 include afirst-type sub-pixel spacing region 11. The first-type sub-pixel spacingregion 11 is located between two first-type sub-pixels 10 adjacent toeach other in the first direction X. The is located in at least onefirst-type sub-pixel spacing region 11.

With such configuration, the light-transmitting aperture 3 is onlylocated between two first-type sub-pixels 10 adjacent to each other in adirection. That is, the light-transmitting aperture 3 is provided at aside of the first-type sub-pixels 10 only in the first direction X, orthe light-transmitting apertures 3 are provided at two side of thefirst-type sub-pixels 10 only in the first direction X. In this case,the light-transmitting apertures 3 in the fingerprint recognition region2 are dispersed more uniformly, and it is avoided that thelight-transmitting apertures 3 distributed beside a first-type sub-pixel10 are arranged excessive densely while ensuring a high distributiondensity of the light-transmitting apertures 3, thereby avoiding themutual interference of the detection light emitted through the adjacentlight-transmitting apertures 3.

FIG. 9 is a schematic diagram showing arrangement positions oflight-transmitting apertures 3 according to another embodiment of thepresent disclosure. In some embodiments, as shown in FIG. 9 , thedisplay panel includes multiple pixel groups 12 arranged along a seconddirection Y. The pixel group 12 includes multiple sub-pixels 4 arrangedalong a third direction Z. The second direction Y intersects with thethird direction Z. The sub-pixels 4 in two adjacent pixel groups 12 canbe arranged in a staggering manner in the second direction Y.

The display region 1 includes pixel group spacing regions 13. The pixelgroup spacing region 13 is located between the sub-pixels 4 of twoadjacent pixel groups 12. The pixel group spacing regions 13 includefirst-type pixel group spacing regions 14 and second-type pixel groupspacing regions 15. The touch lead 6 is located in the first-type pixelgroup spacing region 14. The light-transmitting aperture 3 is located inthe second-type pixel group spacing region 15. With such configuration,the touch leads 6 and the light-transmitting apertures 3 are located indifferent pixel group spacing regions 13 respectively. That is, thetouch lead 6 and the light-transmitting aperture 3 occupy differentcolumns. In this way, on the premise that the touch lead 6 is far awayfrom the light-transmitting aperture 3, the touch lead 6 and thelight-transmitting aperture 3 are arranged more regularly.

In some embodiments, referring to FIG. 9 again, the first-type pixelgroup spacing regions 14 and the second-type pixel group spacing regions15 are alternately arranged along the second direction Y. In this case,the touch lead 6 and the light-transmitting aperture 3 occupy differentcolumns and are arranged in a staggered manner, and there is onefirst-type pixel group spacing region 14 between any two adjacentsecond-type pixel group spacing regions 15, so that it is avoided thatthe multiple second-type pixel group spacing regions 15 areconcentratedly arranged, thereby reducing the degree of difference inthe amount of detected light collected by optical sensors at differentpositions.

In some embodiments, the second-type pixel group spacing regions 15 arearranged at equal intervals. That is, the distances between any twoadjacent second-type pixel group spacing regions 15 are the same. Inthis case, the light-transmitting apertures 3 are distributed moreuniformly in the whole fingerprint recognition region 2, and theuniformity of the amount of detection light collected by the opticalsensors at different positions of the fingerprint recognition region 2is better.

In some embodiments, in order to improve the distribution uniformity ofthe light-transmitting apertures 3 in the second-type pixel groupspacing region 15, the light-transmitting apertures 3 can also bearranged at equal intervals in the second-type pixel group spacingregion 15. That is, the light-transmitting apertures 3 can be arrangedat equal intervals along the extending direction of the second-typepixel group spacing region 15. The distances between any two adjacentlight-transmitting apertures 3 in the second-type pixel group spacingregion 15 are the same.

FIG. 10 is a schematic diagram showing arrangement positions oflight-transmitting apertures 3 according to another embodiment of thepresent disclosure. In some embodiments, as shown in FIG. 10 , the pixelgroups 12 include a first pixel group 16 and a second pixel group 17that are arranged alternately along the second direction Y. The firstpixel group 16 includes first sub-pixels 18 and second sub-pixels 19arranged alternately along the third direction Z. The second pixel group17 includes multiple third sub-pixels 20 arranged along the thirddirection Z. In the second direction Y, the third sub-pixel 20 is notaligned with the first sub-pixel 18 or the second sub-pixel 19.

The light-transmitting aperture 3 is located between the third sub-pixel20 and the first sub-pixel 18 adjacent to the third sub-pixel 20 in thefirst direction X, and/or, located between the third sub-pixel 20 andthe second sub-pixel 19 adjacent to the third sub-pixel 20 in the firstdirection X. The first direction X intersects with the second directionY and the third direction Z.

The first sub-pixel 18 can be a red sub-pixel configured to emit redlight, the second sub-pixel 19 can be a blue sub-pixel configured toemit blue light, and the third sub-pixel 20 can be a green sub-pixelconfigured to emit green light.

It can be understood that the luminous efficiency of sub-pixels emittinglight of different colors are different due to the influence of thecharacteristics of the light-emitting material. Generally speaking, theluminous efficiency of the green sub-pixel is higher than the luminousefficiency of the red sub-pixel, and the luminous efficiency of the redsub-pixel is higher than the luminous efficiency of the blue sub-pixel.If the light-transmitting aperture 3 is arranged between two adjacentsub-pixels emitting light of a same color, and if the luminousefficiency of the sub-pixel of this color is high, the brightness of thereflected light of this color is excessively high to exceed thefingerprint recognition ability. However, if the luminous efficiency ofthe color sub-pixel is low, the brightness of the reflected light ofthis color is too low to be recognized.

In view of the above, in the embodiments of the present disclosure,based on the arrangement of the sub-pixels 4 and the arrangementpositions of the light-transmitting apertures 3, the light-transmittingaperture 3 is located between two adjacent sub-pixels of differentcolors, and after light emitted from the two sub-pixels of differentcolors is reflected back by the finger, the brightness of the reflectedlight of the two colors can be neutralized, so that the brightness ofthe reflected light is prevented from being excessively high orexcessively low, thereby optimizing the recognition effect.

FIG. 11 is a schematic diagram showing arrangement positions of touchleads 6 according to some embodiments of the present disclosure, andFIG. 12 is a schematic diagram showing arrangement positions of touchleads 6 according to another embodiment of the present disclosure. Insome embodiments, as shown in FIG. 11 and FIG. 12 , the display region 1includes a first region 21 and a second region 22 that are adjacent toeach other in the second direction Y. The first region 21 includes afirst lead region 23 and a first non-lead region 24 that are arrangedalong the second direction Y. The second region 22 includes a secondlead region 25 and a second non-lead region 26 that are arranged alongthe second direction Y. The first non-lead region 24 and the secondnon-lead region 26 are adjacent to each other.

The touch lead 6 electrically connected to the touch electrode 5 in thefirst region 21 is located in the first lead region 23. The touch lead 6electrically connected to the touch electrode 5 in the second region 22is located in the second lead region 25. A part of the fingerprintrecognition region 2 is located in the first non-lead region 24, andanother part of the fingerprint recognition region 2 is located in thesecond non-lead region 26. FIG. 11 shows a situation where parts of thefingerprint recognition region 2 are located in the first non-leadregion 24, the second non-lead region 26, the first lead region 23, andthe second lead region 25, respectively. FIG. 12 shows a part of thefingerprint recognition region 2 is located in the first non-lead region24 and the remaining part of the fingerprint recognition region 2 islocated in the second non-lead region 26.

With such configuration, the touch leads 6 in the first region 21 areconcentrated in the first lead region 23 away from the second region 22,and the touch leads 6 in the second region 22 are concentrated in thesecond lead region 25 away from the first region 21, so that no touchleads 6 extend in the first non-lead region 24 and second non-leadregion 26 that are adjacent to each other. When a part of thefingerprint recognition region 2 is located in the first non-lead region24 and another part of the fingerprint recognition region 2 is locatedin the second non-lead region 26, the number of the touch leads 6penetrating the fingerprint recognition region 2 can be reduced, so asto not only make the touch leads 6 shield the fingerprint recognitionregion 2 less to improve the light transmittance of the fingerprintrecognition region 2 to enable more detection light to enter thelight-transmitting aperture 3 through the fingerprint recognition region2, but also to increase the number of sub-pixel spacing regions 7 wherethe light-transmitting apertures 3 is provided in the fingerprintrecognition region 2. For example, when a part of the fingerprintrecognition region 2 is located in the first non-lead region 24 and theremaining part of the fingerprint recognition region 2 is located in thesecond non-lead region 26, there are no touch leads 6 passing throughthe fingerprint recognition region 2. In this case, all sub-pixelspacing regions 7 in the fingerprint recognition region 2 each can beprovided with the light-transmitting apertures 3, thereby achieving amaximum distribution density of the light-transmitting apertures 3.

FIG. 13 is a schematic diagram showing arrangement positions of touchleads 6 according to another embodiment of the present disclosure. Insome embodiments, as shown in FIG. 13 , the touch electrodes 5 include afirst touch electrode 27 and a second touch electrode 28. The firsttouch electrode 27 is located in a first region 21, and overlaps withthe fingerprint recognition region 2 in a direction perpendicular to theplane of the display panel. A side of the first touch electrode 27 awayfrom the fingerprint recognition region 2 is electrically connected tothe touch lead 6. The second touch electrode 28 is located in the secondregion 22, and overlaps with the fingerprint recognition region 2 in thedirection perpendicular to the plane of the display panel. A side of thesecond touch electrode 28 away from the fingerprint recognition region 2is electrically connected to the touch lead 6.

Taking the first touch electrode 27 as an example, referring to FIG. 13again, the side of the first touch electrode 27 away from thefingerprint recognition region 2 refers to: in a direction parallel tothe plane of the display panel, the first touch electrode 27 includes afirst side 60 and a second side 61 that are opposite to each other inthe second direction Y. The first side 60 is a side of the first touchelectrode 27 that overlaps with the fingerprint recognition region 2.The second side 61 that does not overlap with the fingerprintrecognition region 2 is a side of the first touch electrodes 27 awayfrom the fingerprint recognition region 2.

In the above configuration, the touch lead 6 electrically connected tothe first touch electrode 27 extends from a side of the first touchelectrode 27 away from the fingerprint recognition region 2, and thetouch lead 6 electrically connected to the second touch electrode 28extends from a side of the second touch electrode 28 away from thefingerprint recognition region 2, so that this touch leads 6 does notoverlap with the fingerprint recognition region 2, which will neithershield the fingerprint recognition region 2 nor occupy the sub-pixelspacing region 7 in the fingerprint recognition region 2.

In the above configuration, the touch electrode 5 and the touch lead 6can be arranged in a same layer or in different layers.

In some embodiments, referring to FIG. 13 again, a distance L1 betweenthe first lead region 23 and the second lead region 25 is greater thanor equal to a maximum length L2 of the fingerprint recognition region 2in the second direction Y. That is, a part of the fingerprintrecognition region 2 is located in the first non-lead region 24 and theremaining part of the fingerprint recognition region 2 is located in thesecond non-lead region 26. The touch lead 6 bypasses the fingerprintrecognition region 2. The touch lead 6 does not overlap with thefingerprint recognition region 2. Therefore, not only the lighttransmittance of the fingerprint recognition region 2 and thedistribution density of the light-transmitting apertures 3 are improved,but also the touch leads 6 have a same length in the first lead region23 and the second lead region 25 while preventing the touch lead 6 fromshielding the fingerprint recognition region 2, thereby making touchlead 6 to carry a same load.

FIG. 14 is a schematic diagram of touch leads 6 according to anotherembodiment of the present disclosure. In some embodiments, as shown inFIG. 14 , the touch leads 6 include a first touch lead 29 and a secondtouch lead 30. The first touch lead 29 and the second touch lead 30 arelocated in the first lead region 23. The first touch lead 29 is locatedat a side of the second touch lead 30 close to the first non-lead region24. The first touch lead 29 has a smaller length than the second touchlead 30. A part of the fingerprint recognition region 2 is located inthe first lead region 23. In some other embodiments, the touch leads 6include a third touch lead 31 and a fourth touch lead 32. The thirdtouch lead 31 and the fourth touch lead 32 are located in the secondlead region 25. The third touch lead 31 is located at a side of thefourth touch lead 32 close to the second non-lead region 26. The thirdtouch lead 31 has a smaller length than the fourth touch lead 32. A partof the fingerprint recognition region 2 is located in the second leadregion 25.

Based on the above configuration of the touch leads 6, a distancebetween the second touch lead 30 and the fourth touch lead 32 is greaterthan a distance between the first touch lead 29 and the third touch lead31, so that a larger area that is not passed through by the touch lead 6is formed between the second control lead 30 and the fourth touch lead32. Based on such structure, the fingerprint recognition region 2 can belocated between the second touch lead 30 and the fourth touch lead 32.On the premise that the touch lead 6 does not pass through thefingerprint recognition region 2, an area of the fingerprint recognitionregion 2 can be set larger. For example, the touch electrode 5 includesa first edge and a second edge opposite to each other in the seconddirection Y. A touch size refers to a distance between first edges oftwo adjacent touch electrodes 5. For example, a current touch size L3 isgenerally about 4 mm, and a total width L4 occupied by the touch lead 6in the first lead region 23 or in the second lead region 25 is about 1mm. With such design, a maximum length L2 of the fingerprint recognitionregion 2 in the second direction Y can be increased to be greater than 6mm.

In some embodiments, referring to FIG. 14 again, in the first region 21,lengths of the touch leads 6 decrease along a direction from the firstlead region 23 to the first non-lead region 24; and/or, in the secondregion 22, the lengths of the touch leads 6 decrease along a directionfrom the second lead region 25 to the second non-lead region 26, so thatthe area of the fingerprint recognition region 2 can be set larger onthe premise that the touch lead 6 does not pass through the fingerprintrecognition region 2. In some embodiments, as shown in FIG. 14 , in thethird direction Z, a part of the fingerprint recognition region 2overlaps with the first touch lead 29 located in the first lead region23; and/or in the third direction Z, a part of the fingerprintrecognition region 2 overlaps with the third touch lead 31 located inthe second lead region 25.

FIG. 15 is a schematic diagram showing arrangement positions of touchleads 6 according to another embodiment of the present disclosure, andFIG. 16 is a schematic diagram showing arrangement positions of touchleads 6 according to another embodiment of the present disclosure. Insome embodiments, as shown in FIG. 15 and FIG. 16 , the display region 1includes at least one third region 33 and at least one fourth region 34.The third region 33 is located at a side of the first region 21 awayfrom the second region 22. The fourth region 34 is located at a side ofthe second region 22 away from the first region 21.

The third region 33 includes a third lead region 35 and a third non-leadregion 36 that are arranged along a second direction Y. A direction fromthe third lead region 35 to the third non-lead region 36 is same as adirection from the first lead region 23 to the first non-lead region 24.The touch leads 6 in the third region 33 are located in the third leadregion 35. The fourth region 34 includes a fourth lead region 37 and afourth non-lead region 38 that are arranged along the second directionY. A direction from the fourth lead region 37 to the fourth non-leadregion 38 is same as a direction from the second lead region 25 to thesecond non-lead region 26. The touch leads 6 in the fourth region 34 arelocated in the fourth lead region 37.

With such configuration, for the first region 21 and the third region 33that are located at one side of the fingerprint recognition region 2,the touch leads 6 in the first region 21 are located at a side of thefirst region 21 away from the second region 22, and the touch leads 6 inthe third region 33 are located at a side of the third region 33 awayfrom the second region 22. For the second region 22 and the fourthregion 34 that are located at another side of the fingerprintrecognition region 2, the touch leads 6 in the second region 22 arelocated at a side of the second region 22 away from the first region 21,and the touch leads 6 in the fourth region 34 are located at a side ofthe fourth region 34 away from the first region 21. The touch leads 6 attwo sides of the fingerprint recognition region 26 tend to besymmetrically distributed, and the arrangement of the touch leads 6 ismore regular. With such configuration, the distributions of the touchleads 6 in different regions are consistent, thereby improving thereflection uniformity of the touch leads 6 in different regions forambient light.

FIG. 17 is a schematic diagram showing arrangement positions of touchleads 6 according to another embodiment of the present disclosure. Insome embodiments, as shown in FIG. 17 , the display region 1 has a firstcentral axis 39. In order to improve the regular arrangement of thetouch leads 6 and the uniformity of reflection, the touch leads 6 can besymmetrical about the first central axis 39.

In some embodiments, referring to FIG. 15 and FIG. 16 again, thefingerprint recognition region 2 has a second central axis 40. In orderto improve a regular arrangement of the touch leads 6 and uniformity ofreflection, the first touch leads 6 in the first lead region 23 aresymmetrically arranged with the touch leads 6 in the second lead region25 about the second central axis 40.

In some embodiments of the present disclosure, the second central axis40 of the fingerprint recognition region 2 can coincide with the firstcentral axis 39 of the display region 1.

FIG. 18 is a schematic diagram showing arrangement positions oflight-transmitting apertures 3 according to another embodiment of thepresent disclosure, FIG. 19 is a schematic diagram showing arrangementpositions of light-transmitting apertures 3 according to anotherembodiment of the present disclosure. In some embodiments, as shown inFIG. 18 and FIG. 19 , the display panel includes first pixel groups 16and second pixel groups 17 that are alternately arranged along thesecond direction Y. The first pixel group 16 includes first sub-pixels18 and second sub-pixels 19 that are alternately arranged along thethird direction Z. The second pixel group 17 includes multiple thirdsub-pixels 20 that are arranged along the third direction Z. The seconddirection Y intersects with the third direction Z. In the seconddirection Y, the third sub-pixels 20 are not aligned with the firstsub-pixels 18 or the second sub-pixels 19.

Referring to FIG. 18 , the light-transmitting aperture 3 is located inthe sub-pixel spacing region 7 adjacent to the third sub-pixel 20 in thesecond direction Y and the third direction Z. In some embodiments,referring to FIG. 19 , the light-transmitting apertures 3 are located inthe sub-pixel spacing region 7 adjacent to the third sub-pixel 20 in thefirst direction X and the sub-pixel spacing region 7 adjacent to thethird sub-pixel 20 in the fourth direction W, respectively. The firstdirection X intersects with the second direction Y and the thirddirection Z. The fourth direction W intersects with the second directionY and the third direction Z.

When the touch lead 6 does not pass through the fingerprint recognitionregion 2, the distribution density of the light-transmitting apertures 3in the fingerprint recognition region 2 can be larger. When thelight-transmitting apertures 3 are arranged in the above manner, thedistribution of the light-transmitting apertures 3 in the fingerprintrecognition region 2 is more uniform while ensuring a largerdistribution density of the light-transmitting apertures 3, therebyachieving a better uniformity of the amount of detection light collectedby the optical sensors at different positions.

In some embodiments, referring to FIG. 4 again, the touch electrode 5includes a first hollow portion 41. In the direction perpendicular tothe plane of the display panel, the first hollow portion 41 overlapswith the sub-pixel 4, so that the touch electrode 5 exposes thesub-pixel 4 and does not shield the sub-pixel 4, thereby improving theluminous efficiency of the display panel. The touch electrode 5 can bemade of a light-transmitting conductive material such as ITO, or can bemade of a metal material with low resistance.

FIG. 20 is a schematic diagram of touch electrodes 5 according toanother embodiment of the present disclosure. In some embodiments, asshown in FIG. 20 , the touch electrode 5 includes a first-type touchelectrode 42 located in the fingerprint recognition region 2. At leastone first-type touch electrode 42 includes a second hollow portion 43.The second hollow portion 43 overlaps with the light-transmittingaperture 3 in the direction perpendicular to the plane of the displaypanel, so that the touch electrode 5 exposes the light-transmittingapertures 3 to make the touch electrode 5 shield the light-transmittingaperture 3 less, thereby increasing the amount of detection lightentering the optical sensor through the light-transmitting aperture 3,and improving the fingerprint recognition accuracy.

The present disclosure provides a display apparatus. FIG. 21 is aschematic diagram of a display apparatus according to some embodimentsof the present disclosure. As shown in FIG. 21 , the display apparatusincludes the display panels 100 mentioned above. The specific structureof the display panel 100 has been described in detail in the aboveembodiments, and will not be repeated herein. The display apparatusshown in FIG. 21 is only a schematic illustration, and the displayapparatus can be any electronic device with a display function, such asa mobile phone, a tablet computer, a laptop computer, an electronicpaper book, or a television.

The above are merely some embodiments of the present disclosure, whichare not used to limit the present disclosure. Any modification,equivalent replacement, improvement, and the like made within theprinciples of the present disclosure shall fall within the protectionscope of the present disclosure.

Finally, it should be noted that the technical solutions of the presentdisclosure are illustrated by the above embodiments, but not intended tolimit thereto. Although the present disclosure has been described indetail with reference to the foregoing embodiments, those skilled in theart can understand that the present disclosure is not limited to thespecific embodiments described herein, and can make various obviousmodifications, readjustments, and substitutions without departing fromthe scope of the present disclosure.

What is claimed is:
 1. A display panel, having a display region andcomprising: a plurality of sub-pixels located in the display region; aplurality of touch electrodes located in the display region; and aplurality of touch leads located in the display region and respectivelyelectrically connected to the plurality of touch electrodes, wherein thedisplay region comprises a fingerprint recognition region, and thefingerprint recognition region comprises a plurality oflight-transmitting apertures; wherein the display region comprises aplurality of sub-pixel spacing regions, one of the plurality ofsub-pixel spacing regions is located between two adjacent sub-pixels ofthe plurality of sub-pixels, and at most one of one of the plurality oftouch leads and one of the plurality of light-transmitting apertures isprovided in one of the plurality of sub-pixel spacing regions; whereinthe display panel comprises a plurality of pixel groups arranged along asecond direction, wherein at least one of the plurality of pixel groupseach comprises a plurality of sub-pixels arranged along a thirddirection, and wherein the second direction intersects with the thirddirection; wherein the display region comprises a plurality of pixelgroup spacing regions, wherein each of the plurality of pixel groupspacing regions is located between the sub-pixels of two adjacent pixelgroups of the plurality of pixel groups; and wherein the plurality ofpixel group spacing regions comprises a plurality of first-type pixelgroup spacing regions and a plurality of second-type pixel group spacingregions, wherein the plurality of touch leads is located in theplurality of first-type pixel group spacing regions, and the pluralityof light-transmitting apertures is located in the plurality ofsecond-type pixel group spacing regions.
 2. The display panel accordingto claim 1, wherein the plurality of sub-pixels comprises a first-typesub-pixel located in the fingerprint recognition region, and one of theplurality of light-transmitting apertures is provided in at least onesub-pixel spacing region of the plurality of sub-pixel spacing regionsthat is adjacent to the first-type sub-pixel.
 3. The display panelaccording to claim 1, wherein the plurality of sub-pixels comprises aplurality of first-type sub-pixels located in the fingerprintrecognition region, the plurality of sub-pixel spacing regions comprisesa plurality of first-type sub-pixel spacing regions, and one of theplurality of first-type sub-pixel spacing regions is located between twofirst-type sub-pixels of the plurality of first-type sub-pixels that areadjacent to each other in a first direction; and at least one of theplurality of light-transmitting apertures is located in at least one ofthe plurality of first-type sub-pixel spacing regions.
 4. The displaypanel according to claim 1, wherein the plurality of first-type pixelgroup spacing regions and the plurality of second-type pixel groupspacing regions are alternately arranged along the second direction. 5.The display panel according to claim 1, wherein the plurality ofsecond-type pixel group spacing regions is arranged at equal intervals.6. The display panel according to claim 1, wherein at least three of theplurality of light-transmitting apertures are arranged at equalintervals in one of the plurality of second-type pixel group spacingregions.
 7. The display panel according to claim 1, wherein theplurality of pixel groups comprises a plurality of first pixel groupsand a plurality of second pixel groups, wherein that are arrangedalternately in sequence along the second direction; wherein each of theplurality of first pixel groups comprises a plurality of firstsub-pixels and a plurality of second sub-pixels that are alternatelyarranged along the third direction, each of the plurality of secondpixel groups comprises a plurality of third sub-pixels arranged alongthe third direction, and, the plurality of third sub-pixels is alignedwith none of the plurality of first sub-pixels and the plurality ofsecond sub-pixels in the second direction; and wherein one of theplurality of light-transmitting apertures is located between one of theplurality of third sub-pixels and one of the plurality of firstsub-pixels that is adjacent to the third sub-pixel in the firstdirection, and/or located between one third sub-pixel of the pluralityof third sub-pixels and one of the plurality of second sub-pixels thatis adjacent to the one third sub-pixel in the first direction, and thefirst direction intersects with the second direction and the thirddirection.
 8. The display panel according to claim 1, wherein one of theplurality of touch electrodes comprises a first hollow portion thatoverlaps with one of the plurality of sub-pixels in a directionperpendicular to a plane of the display panel.
 9. The display panelaccording to claim 1, wherein the plurality of touch electrodescomprises at least one first-type touch electrode located in thefingerprint recognition region, one of the at least one first-type touchelectrode comprises a second hollow portion, and the second hollowportion overlaps with one of the plurality of light-transmittingapertures in a direction perpendicular to a plane of the display panel.10. A display panel, having a display region and comprising: a pluralityof sub-pixels located in the display region; a plurality of touchelectrodes located in the display region; and a plurality of touch leadslocated in the display region and respectively electrically connected tothe plurality of touch electrodes, wherein the display region comprisesa fingerprint recognition region, and the fingerprint recognition regioncomprises a plurality of light-transmitting apertures; wherein thedisplay region comprises a plurality of sub-pixel spacing regions, oneof the plurality of sub-pixel spacing regions is located between twoadjacent sub-pixels of the plurality of sub-pixels, and at most one ofone of the plurality of touch leads and one of the plurality oflight-transmitting apertures is provided in one of the plurality ofsub-pixel spacing regions wherein the display region comprises a firstregion and a second region that are adjacent to each other in a seconddirection, the first region comprises a first lead region and a firstnon-lead region that are arranged along the second direction, the secondregion comprises a second lead region and a second non-lead region thatare arranged along the second direction, and the first non-lead regionand the second non-lead region are adjacent to each other; and whereinone of the plurality of touch leads that is electrically connected toone of the plurality of touch electrodes in the first region is locatedin the first lead region, and one of the plurality of touch leads thatis electrically connected to one of the plurality of touch electrodes inthe second region is located in the second lead region, and a part ofand another part of the fingerprint recognition region are located inthe first non-lead region and the second non-lead region, respectively.11. The display panel according to claim 10, wherein the plurality oftouch electrodes comprises a first touch electrode and a second touchelectrode; wherein the first touch electrode is located in the firstregion, and overlaps with the fingerprint recognition region in adirection perpendicular to a plane of the display panel, and a side ofthe first touch electrode away from the fingerprint recognition regionis electrically connected to one of the plurality of touch leads; andwherein the second touch electrode is located in the second region, andoverlaps with the fingerprint recognition region in the directionperpendicular to the plane of the display panel, and a side of thesecond touch electrode away from the fingerprint recognition region iselectrically connected to one of the plurality of touch leads.
 12. Thedisplay panel according to claim 10, wherein a distance between thefirst lead region and the second lead region is greater than or equal toa maximum length of the fingerprint recognition region in the seconddirection.
 13. The display panel according to claim 10, wherein theplurality of touch leads comprises a first touch lead and a second touchlead that are located in the first lead region, the first touch lead islocated at a side of the second touch lead close to the first non-leadregion, the first touch lead has a smaller length than the second touchlead, and the fingerprint recognition region is partially located in thefirst touch lead region; and/or wherein the plurality of touch leadscomprises a third touch lead and a fourth touch lead that are located inthe second lead region, the third touch lead is located at a side of thefourth touch lead close to the second non-lead region, the third touchlead has a smaller length than the fourth touch lead, and thefingerprint recognition region is partially located in the second touchlead region.
 14. The display panel according to claim 13, wherein thedisplay panel comprises a plurality of pixel groups arranged along asecond direction, wherein at least one of the plurality of pixel groupseach comprises a plurality of sub-pixels arranged along a thirddirection, and the second direction intersects with the third direction;wherein in the third direction, a part of the fingerprint recognitionregion overlaps with the first touch lead located in the first leadregion; and/or wherein in the third direction, a part of the fingerprintrecognition region overlaps with the third touch lead located in thesecond lead region.
 15. The display panel according to claim 10, whereinthe display region further comprises at least one third region and atleast one fourth region, the at least one third region is located at aside of the first region away from the second region, and the at leastone fourth region is located at a side of the second region away fromthe first region; wherein one of the at least one third region comprisesa third lead region and a third non-lead region that are arranged alongthe second direction, a direction from the third lead region to thethird non-lead region is the same as a direction from the first leadregion to the first non-lead region, and one of the plurality of touchleads in the third region is located in the third lead region; andwherein one of the at least one fourth region comprises a fourth leadregion and a fourth non-lead region that are arranged along the seconddirection, a direction from the fourth lead region to the fourthnon-lead region is the same as a direction from the second lead regionto the second non-lead region, and one of the plurality of touch leadsin the fourth region is located in the fourth lead region.
 16. Thedisplay panel according to claim 10, wherein the display region has afirst central axis about which the plurality of touch leads issymmetrically arranged.
 17. The display panel according to claim 10,wherein the fingerprint recognition region has a second central axisabout which at least one of the plurality of touch leads in the firstlead region and another at least one of the plurality of touch leads inthe second lead region are symmetrically arranged.
 18. The display panelaccording to claim 10, wherein the display panel further comprises aplurality of first pixel groups and a plurality of second pixel groupsthat are alternately arranged in sequence along the second direction,one of the plurality of first pixel groups comprises a plurality offirst sub-pixels and a plurality of second sub-pixels that arealternately arranged along a third direction intersecting with thesecond direction, one of the plurality of second pixel groups comprisesa plurality of third sub-pixels arranged along the third direction;wherein the plurality of third sub-pixels is aligned with none of theplurality of first sub-pixels and the plurality of second sub-pixels inthe second direction; and wherein one of the plurality oflight-transmitting apertures is located in one of the plurality ofsub-pixel spacing regions that is adjacent to one of the plurality ofthird sub-pixels in the second direction and the third direction, or,one of the plurality of light-transmitting apertures is located in oneof the plurality of sub-pixel spacing regions that is adjacent to one ofthe plurality of third sub-pixels in the first direction and the fourthdirection, the first direction intersecting with both the seconddirection and the third direction, and the fourth direction intersectingwith both the second direction and the third direction.
 19. A displayapparatus, comprising a display panel, wherein the display panel has adisplay region and comprises: a plurality of sub-pixels located in thedisplay region; a plurality of touch electrodes located in the displayregion; and a plurality of touch leads located in the display region andrespectively electrically connected to the plurality of touchelectrodes, wherein the display region comprises a fingerprintrecognition region, and the fingerprint recognition region comprises aplurality of light-transmitting apertures; wherein the display regioncomprises a plurality of sub-pixel spacing regions, one of the pluralityof sub-pixel spacing regions is located between two adjacent sub-pixelsof the plurality of sub-pixels, and at most one of one of the pluralityof touch leads and one of the plurality of light-transmitting aperturesis provided in one of the plurality of sub-pixel spacing regions;wherein the display panel comprises a plurality of pixel groups arrangedalong a second direction, wherein at least one of the plurality of pixelgroups each comprises a plurality of sub-pixels arranged along a thirddirection, and wherein the second direction intersects with the thirddirection; wherein the display region comprises a plurality of pixelgroup spacing regions, wherein each of the plurality of pixel groupspacing regions is located between the sub-pixels of two adjacent pixelgroups of the plurality of pixel groups; and wherein the plurality ofpixel group spacing regions comprises a plurality of first-type pixelgroup spacing regions and a plurality of second-type pixel group spacingregions, wherein the plurality of touch leads is located in theplurality of first-type pixel group spacing regions, and the pluralityof light-transmitting apertures is located in the plurality ofsecond-type pixel group spacing regions.